Optical measurement of the inner scale of turbulence

被引:13
作者
Azoulay, E. [1 ]
Thiermann, V. [1 ]
Jetter, A. [1 ]
Kohnle, A. [1 ]
Azar, Z. [2 ]
机构
[1] Forschungsinst Opt, Tubingen, Germany
[2] Soreq Nucl Res Ctr, IL-70600 Yavne, Israel
关键词
D O I
10.1088/0022-3727/21/10S/012
中图分类号
O59 [应用物理学];
学科分类号
摘要
This paper presents a method for the determination of the path-averaged value of the inner scale of atmosphere turbulence, l(0), using an optical scintillometric method. The proposed method involves the measurement of the bichromatic correlation of two laser beams of different wavelengths propagating in overlapping paths. Results obtained using this technique are compared with the ratio of the log-amplitude variances of the two laser beams and with l(0) values derived from vertical wind velocity fluctuation measurements. The results of the correlation method agree well with theory based upon Hill's refractive index spectrum. Results obtained by the ratio of variances match those obtained by the correlation technique after correction for the refractive index dispersion due to humidity fluctuations. These two methods can be used jointly for the simultaneous determination of l(0), C-T(2) and C-Q(2).
引用
收藏
页码:S41 / S44
页数:4
相关论文
共 7 条
[1]  
Azar Z, 1987, CLEO 87 BALT MD
[2]   MODIFIED SPECTRUM OF ATMOSPHERIC-TEMPERATURE FLUCTUATIONS AND ITS APPLICATION TO OPTICAL PROPAGATION [J].
HILL, RJ ;
CLIFFORD, SF .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1978, 68 (07) :892-899
[3]   REFRACTIVE-INDEX AND ABSORPTION FLUCTUATIONS IN THE INFRARED CAUSED BY TEMPERATURE, HUMIDITY, AND PRESSURE-FLUCTUATIONS [J].
HILL, RJ ;
CLIFFORD, SF ;
LAWRENCE, RS .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1980, 70 (10) :1192-1205
[4]  
Ishimaru A., 1978, WAVE PROPAGATION SCA, V1
[5]   PROPOSED METHOD OF INNER SCALE MEASUREMENT IN A TURBULENT ATMOSPHERE [J].
LIVINGSTON, PM .
APPLIED OPTICS, 1972, 11 (03) :684-+
[6]   OPTICAL-SCINTILLATION METHOD OF MEASURING TURBULENCE INNER SCALE [J].
OCHS, GR ;
HILL, RJ .
APPLIED OPTICS, 1985, 24 (15) :2430-2432
[7]   APERTURE-AVERAGED SPECTRAL CORRELATIONS OF BEAMS IN A TURBULENT ATMOSPHERE [J].
TAMIR, M ;
AZOULAY, E ;
TSUR, S ;
HALAVEE, U .
APPLIED OPTICS, 1984, 23 (14) :2359-2362